Human societies of all kinds solve a problem of order. That is what differentiates them from sets of isolated individuals. The problem may be solved in various ways: in particular, some societies possess a state which provides order, while others are stateless. However, the existence of a state...

We examine why heterogenous communities may fail to provide public goods. Current work characterizes sanctioning free-riders as an under-supplied public good. We argue that often free-riders can be punished by the coordinated action of a group. This punishment can be profitable, and need not be...

We report an experiment on the Probabilistic Serial (PS) mechanism for allocating indivisible goods. The PS mechanism, a recently discovered alternative to the widely used Random Serial Dictatorship mechanism, has attractive fairness and efficiency properties if people report their preferences...